Cake

250g butter, 200g all purpose flour, 220g sugar, 1/2 tbsp baking powder, 4eggs, 1tbsp vani

1 egg white, 150g icing sugar (differs from one egg to another), 1tsp lime juice, 1tsp van

200g butter, 300g sugar, 3 large eggs, 200g self raising flour, 1/2tsp baking powder, 1/2tsp